EP 2513245 A1 20121024 - METHOD OF FRACTURING SUBTERRANEAN FORMATIONS WITH CROSSLINKED FLUID
Title (en)
METHOD OF FRACTURING SUBTERRANEAN FORMATIONS WITH CROSSLINKED FLUID
Title (de)
VERFAHREN ZUM AUFBRECHEN UNTERIRDISCHER FORMATIONEN MIT EINEM VERNETZTEN FLUID
Title (fr)
PROCÉDÉ DE FRACTURE DE FORMATIONS SOUTERRAINES AVEC UN FLUIDE RÉTICULÉ
Publication
Application
Priority
- US 64266209 A 20091218
- US 2010060979 W 20101217
Abstract (en)
[origin: US2011146996A1] Subterranean formations, such as tight gas formations, may be subjected to hydraulic fracturing by introducing into the formation a fracturing fluid of an aqueous fluid, a hydratable polymer, a crosslinking agent and proppant. The fracturing fluid is prepared in a blender and then pumped from the blender into the wellbore which penetrates the formation. The fluid enters the reservoir through an entrance site. The apparent viscosity of the fluid decreases distally from the entrance site such that at least one of the following conditions prevails at in situ conditions: (a) the apparent viscosity of the fracturing fluid 100 feet from the entrance site is less than 10 percent of the apparent viscosity of the fracturing fluid at the entrance site; (b) the apparent viscosity of the fracturing fluid 15 minutes after introduction into the entrance site is less than 15% of the apparent viscosity of the fracturing fluid at the entrance site; or (c) the apparent viscosity of the fracturing fluid is less than 10 cP within 15 minutes after being introduced through the entrance site.
IPC 8 full level
C09K 8/68 (2006.01)
CPC (source: EP US)
C09K 8/685 (2013.01 - EP US)
Citation (search report)
See references of WO 2011075629A1
Citation (examination)
- US 2005272612 A1 20051208 - DAWSON JEFFREY C [US], et al
- US 5562160 A 19961008 - BRANNON HAROLD D [US], et al
- US 2009095472 A1 20090416 - ANDERSSON CAROLINA HANNA MATILDA [SE], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2011146996 A1 20110623; US 8371383 B2 20130212; AU 2010330876 A1 20120621; AU 2010330876 B2 20150129; BR 112012014932 A2 20160308; CA 2783471 A1 20110623; CA 2783471 C 20141209; CN 102782081 A 20121114; CN 102782081 B 20151125; CO 6541632 A2 20121016; EP 2513245 A1 20121024; MX 2012007068 A 20120730; MX 351767 B 20171027; WO 2011075629 A1 20110623
DOCDB simple family (application)
US 64266209 A 20091218; AU 2010330876 A 20101217; BR 112012014932 A 20101217; CA 2783471 A 20101217; CN 201080057950 A 20101217; CO 12098444 A 20120612; EP 10801503 A 20101217; MX 2012007068 A 20101217; US 2010060979 W 20101217